ELEMENTS, COMPOUNDS & MIXTURES
ATOMIC STRUCTURE
THE PERIODIC TABLE
SPEED & ACCELERATION
FORCES & MOTION
100
What is the name given to a substance containing only one type of atom?
element
100
Which subatomic particle has a negative charge?
electron
100
Are groups in the Periodic Table arranged vertically or horizontally?
vertically
100
A runner travels 100 metres in 20 seconds. What is their average speed?
5 m/s
100
What is the unit of force?
Newton
200
A sample contains two different substances that have not chemically reacted. What type of material is this?
mixture
200
Where are protons and neutrons found inside an atom?
nucleus
200
What does the period number tell us about an atom?
The number of occupied electron shells
200
A car travels at 12 m/s for 10 seconds. How far does it travel?
120 m
200
Two forces act on a box: 12 N to the right and 7 N to the left. What is the resultant force?
5N (R)
300
Carbon dioxide contains carbon and oxygen chemically joined together. What type of substance is it?
compound
300
An atom contains 13 protons. How many electrons does it have if the atom is neutral?
13
300
An element has the electron configuration 2,8,1. Which group is it in?
Group 1
300
A cyclist increases speed from 6 m/s to 18 m/s in 4 seconds. What is the acceleration?
3 m/s²
300
A 5 kg object experiences a resultant force of 20 N. What is its acceleration?
4 m/s²
400
What is the definition of a pure substance?
Every particle is identical. One set of properties.
400
An atom has 11 protons and 12 neutrons. What is its mass number?
23
400
An element has the electron configuration 2,8,7. Which period is it in?
Period 3
400
Describe what is happening in the following distance-time graph?
constant speed; stationary; slower constant speed.
400
Two objects experience the same force. Object A has a mass of 2 kg and Object B has a mass of 8 kg. Which object has the greater acceleration?
Object A
500
Name two classes of substance that are considered pure substances.
elements and compounds
500
How many protons does this neutral atom contain?
19
500
Element X has the configuration 2,8,6. Element Y is in the same period but has two more outer-shell electrons. What is Y’s electron configuration?
2,8,8
500
A car starts from rest and accelerates at 4 m/s2 for 6 seconds. What speed does it reach?
24 m/s
500
A 3 kg trolley accelerates at 4 m/s2 to the right. What is the magnitude of force X?
20 N